Answer:
Jazz musicians used improvisation; classical musicians did not improvise
Explanation:
One of the significant differences between Jazz and Classical music is that "Jazz musicians used improvisation; classical musicians did not improvise."
Also, Jazz is known for being a performance-driven style of music, while classical music is based on the composer's context.
Another difference is that Jazz is more styled in the modern African-American style of music, which favored rhythms and blues. However, Classical music, on the other hand, is relatively older and more styled in the Western European style of music.